I need to test sites in IE6 and IE7. What's the best way to do this? I have VMWare Fusion, should I just make a snapshot with IE6 installed and a snapshot with IE7 installed? I know there's also this: http://blogs.msdn.com/ie/archive/2006/11/30/ie6-and-ie7-running-on-a-single-machine.aspx Has anyone tried that running through either VMware or Parallels? It seems weird virtualizing again inside of virtualization. And I know there's a way with Crossover to do this but is that really render accurately? I'd rather see the site the way a surfer with IE6 installed out of the box sees it.